ImpressionApp vs GrowPAR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ImpressionApp
Effortlessly manage smart lighting systems with intuitive controls for on/off and brightness. Seamlessly integrate lights by scanning QR codes and access internal services through a streamlined interface.
- Smart lighting management
- QR code light integration
- On/Off light control
- Brightness adjustment
- Smart dimming technology
- Internal service access
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Introducing the Impression App, an all-encompassing app designed to streamline the management of smart lighting systems and access to internal services. At its core, the app simplifies the setup process by allowing users to effortlessly scan QR codes associated with their lights, seamlessly integrating them into the system. The primary focus lies in Lighting Control, offering users an intuitive interface to turn lights on or off and adjust brightness levels with a single tap. The app goes beyond basic controls, featuring smart dimming technology for precise illumination adjustments to suit any ambiance. Illuminate your space with ease and navigate your way to our internal services – download the Impression App today!
GrowPAR
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GrowPAR turns your iPhone into a professional-grade PAR light meter for indoor growing, hydroponics, and plant research. What is PAR? Photosynthetically Active Radiation (PAR) measures the light your plants actually use for photosynthesis — between 400–700nm. Unlike lux meters, GrowPAR measures what matters most to your plants. KEY MEASUREMENTS - PPFD (μmol/m²/s) — Instant photon flux density - DLI (mol/m²/day) — Daily Light Integral for growth optimization - CCT (Kelvin) — Color temperature of your light source - Lux — Illuminance measurement PLANT INTELLIGENCE GrowPAR includes a database of 36+ plants with scientifically accurate targets: - Stage-based PPFD targets: Seedling → Vegetative → Flowering → Harvest - Ideal temperature (day/night), humidity, and CO₂ levels - Hydroponics parameters: pH range and EC values - LED distance and photoperiod recommendations - Real-time sufficiency indicator: Is your light enough? LIGHT SOURCES Calibrated for all grow light types: - Full Spectrum LED • Red/Blue LED • HPS • CMH • Natural Sunlight MEASUREMENTS & HISTORY - Save unlimited measurements with timestamp - Filter by plant and light source - Export to CSV for analysis CALIBRATION Use with Apogee MQ-500 or similar quantum sensor for research-grade accuracy. 11 LANGUAGES English · German · Spanish · Turkish · French · Italian · Portuguese · Russian · Japanese · Chinese · Arabic Whether you're growing tomatoes, microgreens, or orchids — GrowPAR gives you the data to grow smarter. Privacy Policy: https://hfozturka.github.io/growpar/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: GrowPAR at every 4 days against ImpressionApp's every 5 weeks. ImpressionApp's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ImpressionApp ships an update every 5 weeks, GrowPAR every 4 days. Both last shipped on October 1, 2026.
| Parameter | ImpressionApp | GrowPAR |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 5 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 25 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Nubiaville Limited | Halil Fatih Ozturk |
In-app purchases
ImpressionApp
No in-app purchases
GrowPAR
No in-app purchases
Questions
Is ImpressionApp free?
Is GrowPAR free?
Do ImpressionApp or GrowPAR have ads?
Which is updated more often, ImpressionApp or GrowPAR?
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